Specifications: 6 Cell, Li-ion battery, Rated at 11.1V(10.8V Compatible) 5200mAh Compatible Models: Battery for Samsung R439 R440 R470 R478 R522 R530 R538 R540 R580 R730 R780 Q318 Q430 RF510 AA-PB9NC6B AA-PB9NS6B All Futurebatt Products are CE-/RoHS-/FCC- Certified and Built-in circuit protection ensure both safety and stability; Strict guidelines for compatibility, and standards compliance for environmental safety 100% Brand New from Manufacturer; Rechargeable Up to 600 times over life of battery; Equipped with Higher Quality Cells yet has Same Size & Shape as an OEM Battery This Product has 60 DAYS MONEY BACK GUARANTEE or 18 MONTHS REPLACEMENT WARRANTY! With Hassle-free Customer Service; Please contact us with any questions or concerns - we are here to help. (Please check if this battery is compatible with your computer before purchasing. Part numbers of compatible batteries and Computers are listed in the Product Description Details)